HD64F3039F18 Datasheet, PDF(164/710 Page) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

HD64F3039F18 Datasheet, PDF (164/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

◁

Section 7 I/O Ports

7.2.3 Pin Functions in Each Mode

The pin functions of port 1 differ between mode 1, 3 (expanded mode with on-chip ROM

disabled), mode 5 (expanded mode with on-chip ROM enabled), mode 6, and 7 (single-chip

mode). The pin functions in each mode are described as follows.

Modes 1 and 3

Address output can be selected for each pin in port 1. Figure 7.2 shows the pin functions in modes

1 and 3.

Port 1

A7 (output)

A6 (output)

A5 (output)

A4 (output)

A3 (output)

A2 (output)

A1 (output)

A0 (output)

Figure 7.2 Pin Functions in Modes 1 and 3 (Port 1)

Mode 5

Address output or generic input can be selected for each pin in port 1. A pin becomes an address

output pin if the corresponding P1DDR bit is set to 1, and a generic input pin if this bit is cleared

to 0. Following a reset, all pins are input pins. To use a pin for address output, its P1DDR bit must

be set to 1. Figure 7.3 shows the pin functions in mode 5.

Rev.3.00 Mar. 26, 2007 Page 140 of 682

REJ09B0353-0300

▷